Latest Progress of Research on Rockburst Experiment Mechanism and Its Control

Abstract

Rockburst experimental research is an important method to understand rockburst and its mechanism. This paper proposes a rockburst classification method, which can be divided into strain burst and impact rockburst. Independently developed three true triaxial rockburst experimental systems, including the first-generation strain burst experimental system, the second-generation strain burst experimental system, and the impact rockburst experimental system. Successfully reproduced different types of rockbursts in experiments, including: single-face unloading strain burst, two-face unloading strain burst, three-face unloading strain burst, four-face unloading strain burst, impact rockburst, and rockburst of jointed rock mass induced by impact. Macro NPR anchors and micro NPR anchors with negative Poisson’s ratio effect have been developed, and field rockburst simulation experiments have been performed. The anchor has good rockburst resistance. The rockburst experimental simulation and NPR anchor in this paper can provide reference for the study of rockburst mechanism and its control.